| 发明名称 | Method for the transmission of a multi-carrier signal, and corresponding transmission device and computer program | ||
| 摘要 | A method is provided for transmission of an OFDM signal, wherein pre-transmission processing includes: mapping data representative of a source signal to complex symbols Xn, 0<=n<M, belonging to a constellation; transforming M symbols Xn into M corrected symbols X′n, such that X′n=Xn+dn, wherein dn is a complex correction; and mapping M corrected symbols X′n to M from N carriers of an OFDM modulator to generate an OFDM signal, M<=N. The transformation includes initializing an accumulator, and, for each carrier of order n: accumulating at J samples of the n-order carrier mapped by X′n; detecting a peak on the J samples accumulated at order n−1 and comparing the peak with the corresponding time sample of the n-order carrier delivering complex correction control information; and determining the correction value dn to obtain the corrected symbol X′n according to the correction control information. | ||
| 申请公布号 | US9455858(B2) | 申请公布日期 | 2016.09.27 |
| 申请号 | US201314433838 | 申请日期 | 2013.09.30 |
| 申请人 | ORANGE | 发明人 | Lanoiselee Marc;Jahan Bruno |
| 分类号 | H04L27/26;H04L25/03 | 主分类号 | H04L27/26 |
| 代理机构 | Westman Champlin & Koehler, P.A. | 代理人 | Brush David D.;Westman Champlin & Koehler, P.A. |
| 主权项 | 1. A method for transmitting a temporal OFDM signal generated from OFDM blocks modulated by an OFDM modulator of N carriers, comprising a processing before transmission, which comprises for an OFDM block of the OFDM blocks: a mapping of data representative of a source signal on complex symbols Xn, 0≦n<M, belonging to a constellation, n and M being integers, a transformation of M symbols Xn into M corrected symbols X′n, such that X′n=Xn+dn, with dn being a complex correction, with X′0=X0, such that the transformation comprises for the OFDM block: initialization of an accumulator with LN temporal samples, L≧1 and being an oversampling factor, andcomprises, for each carrier of order n in the range of 1 to M−1: detection of a peak on the LN temporal samples present in the accumulator and comparison of this peak with a coinciding temporal sample out of LN temporal samples of the carrier of order n delivering a complex correction control information item, a correction determining the complex correction value do to obtain the corrected symbol X′n as a function of the complex correction control information item, and accumulation in the accumulator respectively with the LN temporal samples present of LN temporal samples corresponding to LN temporal samples of the carrier of order n mapped by X′n,and the method comprises for the OFDM block: a mapping of the M corrected symbols X′n on M out of the N carriers of the OFDM modulator to generate the OFDM temporal signal, N being an integer, M≦N, and transmitting the OFDM temporal signal at a reduced peak-to-average power ratio. | ||
| 地址 | Paris FR | ||